Separation of low concentration of cesium ion from wastewater by electrochemically switched ion exchange method: Experimental adsorption kinetics analysis

► A continuous cesium separation and regeneration process based on ESIX could be achieved by a diaphragm-isolated reactor. ► The adsorption/desorption rate of Cs+ could be increased by applied potential. ► H3O+ played a dual role of electrolyte and competitor. ► A pseudo-first-order kinetics model could be used to describe the adsorption rate of cesium in the ESIX process. ► The ESIX of cesium consisted of ESIX step and ion diffusion step.